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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
In 1864, the first barbiturate (barbituric acid) was synthesized.
If you could remove all of your skin, it would weigh up to 5 pounds.
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.